Pygeum africanum is a plum tree originated from Africa. (that's why it is called pygeum africanum:).
It is a tree. The part that is used is its bark.
It is used to shrink prostate? HOW?
You should know that one of the causes to prostate enlargment is hormonal imbalance
Pygeum contains specific chemicals that can regulate this imbalance; thus, the prostate will be back to its normal size.
It is rich in phytosterols that can have their effects on 5-alfa-reductase, the enzyme playing a crucial role in prostate growth.
https://www.flickr.com/photos/96941986@N08/9119884690" title="Pygeum-Africanum by Akın Demir, on Flickr